Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

66.6°F

Measurement Time: Thursday, August 6, 2026, 1:15 AM PDT

Temperature Locations

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Local Points of Interest

Stanislaus National Forest; Colfax Spring, CA; Mather, CA; Harden Flat, CA

Tuolumne River

Station Name: TUOLUMNE R BL EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,369 feet

Nearest Address:
Cherry Lake Rd
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.8815908, -119.9701824

Nearby Water Temperatures

Tuolumne River, Groveland, CA (1.3 mi)
Cherry Creek, Groveland, CA (6.6 mi)
Tuolumne River, Groveland, CA (10.1 mi)
Tuolumne River, Groveland, CA (17.1 mi)
Merced River, Yosemite Valley, CA (24.7 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (51.3 mi)
Deadman Creek, Mammoth Lakes, CA (57 mi)
Hot Creek, Mammoth Lakes, CA (62.8 mi)
Hot Creek, Mammoth Lakes, CA (63.4 mi)
San Joaquin River, Friant, CA (63.4 mi)
Hot Creek, Mammoth Lakes, CA (64.6 mi)
Trout Creek, South Lake Tahoe, CA (71.7 mi)
Upper Truckee River, South Lake Tahoe, CA (71.9 mi)
General Creek, Tahoma, CA (81.3 mi)
South Fork American River, Rescue, CA (82.9 mi)

Weather for Groveland, California

Current Weather

82.9°F
Sunny
Sunny
78.8°F
79.3°F
18%
E 2.2 mph
3.2 mph
82.9°F
34.5°F
0 in
0%
6 mi
1013 mbar
1

Five Day Weather Forecast

Smoky haze
Thu
H: 97°F
L: 72°F
Smoky haze
Fri
H: 101°F
L: 78°F
Smoky haze
Sat
H: 102°F
L: 78°F
Smoky haze
Sun
H: 103°F
L: 79°F
Smoky haze
Mon
H: 100°F
L: 77°F

Air Quality

AQI: 4 - Unhealthy
PM2.5: 27.3 μg/m3
PM10: 28 μg/m3
Carbon Monoxide: 109 μg/m3
Nitrogen Dioxide: 6.9 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:05 PM
Sunset: 8:03 PM
Daylight: 13 hrs 56 mins
Moonrise: 12:38 AM
Moon Transit: 7:05 AM
Moonset: 2:44 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:35 AM - 9:05 AM
2:55 PM - 5:25 PM

Minor Periods

2:14 PM - 3:44 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Smoky haze
96.8°F
71.8°F
84.5°F
19%
0 in
0%
0%
11 mph
8.3


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 58.96 μg/m3
PM10: 61.58 μg/m3
Carbon Monoxide: 272.79 μg/m3
Nitrogen Dioxide: 11.08 μg/m3
Sulphur Dioxide: 3.59 μg/m3
Ozone: 134.5 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:05 PM
Sunset: 8:03 PM
Daylight: 13 hrs 56 mins
Moonrise: 12:38 AM
Moon Transit: 7:05 AM
Moonset: 2:44 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:35 AM - 9:05 AM
2:55 PM - 5:25 PM

Minor Periods

2:14 PM - 3:44 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, August 7, 2026

Weather Forecast

Smoky haze
100.7°F
77.5°F
87.9°F
17%
0 in
1%
0%
9.8 mph
7.4


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 53.33 μg/m3
PM10: 55.79 μg/m3
Carbon Monoxide: 251 μg/m3
Nitrogen Dioxide: 10.99 μg/m3
Sulphur Dioxide: 3.35 μg/m3
Ozone: 124.75 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:05 PM
Sunset: 8:02 PM
Daylight: 13 hrs 54 mins
Moonrise: 12:20 AM
Moon Transit: 8:04 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:34 AM - 10:04 AM
3:55 PM - 6:25 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, August 8, 2026

Weather Forecast

Smoky haze
101.6°F
78.2°F
88.6°F
17%
0 in
1%
0%
9.2 mph
6.6


Air Quality

AQI: 4 - Unhealthy
PM2.5: 65.56 μg/m3
PM10: 68.38 μg/m3
Carbon Monoxide: 239.13 μg/m3
Nitrogen Dioxide: 11.05 μg/m3
Sulphur Dioxide: 4.1 μg/m3
Ozone: 139.58 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:05 PM
Sunset: 8:01 PM
Daylight: 13 hrs 52 mins
Moonrise: 1:12 AM
Moon Transit: 9:07 AM
Moonset: 5:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.6%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
4:59 PM - 7:29 PM

Minor Periods

4:36 PM - 6:06 PM
12:42 AM - 2:12 AM

Action Rating: 2 out of 5

Sunday, August 9, 2026

Weather Forecast

Smoky haze
102.6°F
78.9°F
89.4°F
17%
0 in
0%
0%
10.1 mph
8.9


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 63.71 μg/m3
PM10: 66.57 μg/m3
Carbon Monoxide: 322.53 μg/m3
Nitrogen Dioxide: 8.26 μg/m3
Sulphur Dioxide: 3.37 μg/m3
Ozone: 141.79 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:05 PM
Sunset: 8:00 PM
Daylight: 13 hrs 50 mins
Moonrise: 2:16 AM
Moon Transit: 10:12 AM
Moonset: 6:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.8%

Best Times for Fishing or Hunting

Major Periods

6:04 PM - 8:34 PM
9:42 AM - 12:12 AM

Minor Periods

5:36 PM - 7:06 PM
1:46 AM - 3:16 AM

Action Rating: 2 out of 5

Monday, August 10, 2026

Weather Forecast

Smoky haze
99.7°F
77.4°F
87.4°F
16%
0 in
1%
0%
9.4 mph
9


Air Quality

AQI: 4 - Unhealthy
PM2.5: 68.78 μg/m3
PM10: 71.47 μg/m3
Carbon Monoxide: 605 μg/m3
Nitrogen Dioxide: 8.67 μg/m3
Sulphur Dioxide: 2.83 μg/m3
Ozone: 96.5 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:05 PM
Sunset: 7:59 PM
Daylight: 13 hrs 48 mins
Moonrise: 3:28 AM
Moon Transit: 11:16 AM
Moonset: 6:55 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

7:07 PM - 9:37 PM
10:46 AM - 1:16 PM

Minor Periods

6:25 PM - 7:55 PM
2:58 AM - 4:28 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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